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          <h2 class="post-title" itemprop="name headline">Fish Shell 命令补全

              
            
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        <p>记录一下 <code>complete</code> 各个参数含义。</p>
<a id="more"></a>
<p><code>-c</code> 要补全的命令</p>
<p><code>-p</code> 命令路径</p>
<p><code>-e</code></p>
<p><code>-s</code> 短参数 <code>-h</code></p>
<p><code>-l</code> 长参数 <code>--help</code></p>
<p><code>-o</code> old style long option</p>
<p><code>-a</code> 添加子命令</p>
<p><code>-f</code> 不列出文件</p>
<p><code>-r</code></p>
<p><code>-x</code> -f and -r</p>
<p><code>-w</code></p>
<p><code>-n</code> 函数</p>
<p><code>-CSTRING</code></p>
<p><code>-C</code></p>
<p><code>-A</code></p>
<p><code>-u</code></p>
<p><code>-d</code> 描述</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br><span class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br><span class="line">187</span><br><span class="line">188</span><br><span class="line">189</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">    complete -- edit <span class="built_in">command</span> specific tab-completions</span><br><span class="line"></span><br><span class="line">Synopsis</span><br><span class="line">    complete ( -c | --<span class="built_in">command</span> | -p | --path ) COMMAND</span><br><span class="line">            [( -c | --<span class="built_in">command</span> | -p | --path ) COMMAND]...</span><br><span class="line">            [( -e | --erase )]</span><br><span class="line">            [( -s | --short-option ) SHORT_OPTION]...</span><br><span class="line">            [( -l | --long-option | -o | --old-option ) LONG_OPTION]...</span><br><span class="line">            [( -a | --arguments ) OPTION_ARGUMENTS]</span><br><span class="line">            [( -f | --no-files )]</span><br><span class="line">            [( -r | --require-parameter )]</span><br><span class="line">            [( -x | --exclusive )]</span><br><span class="line">            [( -w | --wraps ) WRAPPED_COMMAND]...</span><br><span class="line">            [( -n | --condition ) CONDITION]</span><br><span class="line">            [( -d | --description ) DESCRIPTION]</span><br><span class="line">    complete ( -C[STRING] | --<span class="keyword">do</span>-complete[=STRING] )</span><br><span class="line"></span><br><span class="line">Description</span><br><span class="line">    For an introduction to specifying completions, see Writing your own</span><br><span class="line">    completions <span class="keyword">in</span> the fish manual.</span><br><span class="line"></span><br><span class="line">    · COMMAND is the name of the <span class="built_in">command</span> <span class="keyword">for</span> <span class="built_in">which</span> to add a completion.</span><br><span class="line"></span><br><span class="line">    · SHORT_OPTION is a one character option <span class="keyword">for</span> the <span class="built_in">command</span>.</span><br><span class="line"></span><br><span class="line">    · LONG_OPTION is a multi character option <span class="keyword">for</span> the <span class="built_in">command</span>.</span><br><span class="line"></span><br><span class="line">    · OPTION_ARGUMENTS is parameter containing a space-separated list of</span><br><span class="line">      possible option-arguments, <span class="built_in">which</span> may contain <span class="built_in">command</span> substitutions.</span><br><span class="line"></span><br><span class="line">    · DESCRIPTION is a description of what the option and/or option</span><br><span class="line">      arguments <span class="keyword">do</span>.</span><br><span class="line"></span><br><span class="line">    · -c COMMAND or --<span class="built_in">command</span> COMMAND specifies that COMMAND is the name</span><br><span class="line">      of the <span class="built_in">command</span>.</span><br><span class="line"></span><br><span class="line">    · -p COMMAND or --path COMMAND specifies that COMMAND is the absolute</span><br><span class="line">      path of the program (optionally containing wildcards).</span><br><span class="line"></span><br><span class="line">    · -e or --erase deletes the specified completion.</span><br><span class="line"></span><br><span class="line">    · -s SHORT_OPTION or --short-option=SHORT_OPTION adds a short option</span><br><span class="line">      to the completions list.</span><br><span class="line"></span><br><span class="line">    · -l LONG_OPTION or --long-option=LONG_OPTION adds a GNU style long</span><br><span class="line">      option to the completions list.</span><br><span class="line"></span><br><span class="line">    · -o LONG_OPTION or --old-option=LONG_OPTION adds an old style long</span><br><span class="line">      option to the completions list (See below <span class="keyword">for</span> details).</span><br><span class="line"></span><br><span class="line">    · -a OPTION_ARGUMENTS or --arguments=OPTION_ARGUMENTS adds the</span><br><span class="line">      specified option arguments to the completions list.</span><br><span class="line"></span><br><span class="line">    · -f or --no-files specifies that the options specified by this</span><br><span class="line">      completion may not be followed by a filename.</span><br><span class="line"></span><br><span class="line">    · -r or --require-parameter specifies that the options specified by</span><br><span class="line">      this completion always must have an option argument, i.e. may not</span><br><span class="line">      be followed by another option.</span><br><span class="line"></span><br><span class="line">    · -x or --exclusive implies both -r and -f.</span><br><span class="line"></span><br><span class="line">    · -w WRAPPED_COMMAND or --wraps=WRAPPED_COMMAND causes the specified</span><br><span class="line">      <span class="built_in">command</span> to inherit completions from the wrapped <span class="built_in">command</span> (See below</span><br><span class="line">      <span class="keyword">for</span> details).</span><br><span class="line"></span><br><span class="line">    · -n or --condition specifies a shell <span class="built_in">command</span> that must <span class="built_in">return</span> 0 <span class="keyword">if</span></span><br><span class="line">      the completion is to be used. This makes it possible to specify</span><br><span class="line">      completions that should only be used <span class="keyword">in</span> some cases.</span><br><span class="line"></span><br><span class="line">    · -CSTRING or --<span class="keyword">do</span>-complete=STRING makes complete try to find all</span><br><span class="line">      possible completions <span class="keyword">for</span> the specified string.</span><br><span class="line"></span><br><span class="line">    · -C or --<span class="keyword">do</span>-complete with no argument makes complete try to find all</span><br><span class="line">      possible completions <span class="keyword">for</span> the current <span class="built_in">command</span> line buffer. If the</span><br><span class="line">      shell is not <span class="keyword">in</span> interactive mode, an error is returned.</span><br><span class="line"></span><br><span class="line">    · -A and --authoritative no longer <span class="keyword">do</span> anything and are silently</span><br><span class="line">      ignored.</span><br><span class="line"></span><br><span class="line">    · -u and --unauthoritative no longer <span class="keyword">do</span> anything and are silently</span><br><span class="line">      ignored.</span><br><span class="line"></span><br><span class="line">    Command specific tab-completions <span class="keyword">in</span> fish are based on the notion of</span><br><span class="line">    options and arguments. An option is a parameter <span class="built_in">which</span> begins with a</span><br><span class="line">    hyphen, such as <span class="string">'-h'</span>, <span class="string">'-help'</span> or <span class="string">'--help'</span>. Arguments are parameters</span><br><span class="line">    that <span class="keyword">do</span> not begin with a hyphen. Fish recognizes three styles of</span><br><span class="line">    options, the same styles as the GNU version of the getopt library.</span><br><span class="line">    These styles are:</span><br><span class="line"></span><br><span class="line">    · Short options, like <span class="string">'-a'</span>. Short options are a single character</span><br><span class="line">      long, are preceded by a single hyphen and may be grouped together</span><br><span class="line">      (like <span class="string">'-la'</span>, <span class="built_in">which</span> is equivalent to <span class="string">'-l -a'</span>). Option arguments may</span><br><span class="line">      be specified <span class="keyword">in</span> the following parameter (<span class="string">'-w 32'</span>) or by appending</span><br><span class="line">      the option with the value (<span class="string">'-w32'</span>).</span><br><span class="line"></span><br><span class="line">    · Old style long options, like <span class="string">'-Wall'</span>. Old style long options can be</span><br><span class="line">      more than one character long, are preceded by a single hyphen and</span><br><span class="line">      may not be grouped together. Option arguments are specified <span class="keyword">in</span> the</span><br><span class="line">      following parameter (<span class="string">'-ao null'</span>).</span><br><span class="line"></span><br><span class="line">    · GNU style long options, like <span class="string">'--colors'</span>. GNU style long options can</span><br><span class="line">      be more than one character long, are preceded by two hyphens, and</span><br><span class="line">      may not be grouped together. Option arguments may be specified <span class="keyword">in</span></span><br><span class="line">      the following parameter (<span class="string">'--quoting-style shell'</span>) or by appending</span><br><span class="line">      the option with a <span class="string">'='</span> and the value (<span class="string">'--quoting-style=shell'</span>). GNU</span><br><span class="line">      style long options may be abbreviated so long as the abbreviation</span><br><span class="line">      is unique (<span class="string">'--h'</span>) is equivalent to <span class="string">'--help'</span> <span class="keyword">if</span> <span class="built_in">help</span> is the only</span><br><span class="line">      long option beginning with an <span class="string">'h'</span>).</span><br><span class="line"></span><br><span class="line">    The options <span class="keyword">for</span> specifying <span class="built_in">command</span> name and <span class="built_in">command</span> path may be used</span><br><span class="line">    multiple <span class="built_in">times</span> to define the same completions <span class="keyword">for</span> multiple commands.</span><br><span class="line"></span><br><span class="line">    The options <span class="keyword">for</span> specifying <span class="built_in">command</span> switches and wrapped commands may</span><br><span class="line">    be used multiple <span class="built_in">times</span> to define multiple completions <span class="keyword">for</span> the</span><br><span class="line">    <span class="built_in">command</span>(s) <span class="keyword">in</span> a single call.</span><br><span class="line"></span><br><span class="line">    Invoking complete multiple <span class="built_in">times</span> <span class="keyword">for</span> the same <span class="built_in">command</span> adds the new</span><br><span class="line">    definitions on top of any existing completions defined <span class="keyword">for</span> the</span><br><span class="line">    <span class="built_in">command</span>.</span><br><span class="line"></span><br><span class="line">    When -a or --arguments is specified <span class="keyword">in</span> conjunction with long, short,</span><br><span class="line">    or old style options, the specified arguments are only used as</span><br><span class="line">    completions when attempting to complete an argument <span class="keyword">for</span> any of the</span><br><span class="line">    specified options. If -a or --arguments is specified without any</span><br><span class="line">    long, short, or old style options, the specified arguments are used</span><br><span class="line">    when completing any argument to the <span class="built_in">command</span> (except when completing</span><br><span class="line">    an option argument that was specified with -r or --require-</span><br><span class="line">    parameter).</span><br><span class="line"></span><br><span class="line">    Command substitutions found <span class="keyword">in</span> OPTION_ARGUMENTS are not expected to</span><br><span class="line">    <span class="built_in">return</span> a space-separated list of arguments. Instead they must <span class="built_in">return</span></span><br><span class="line">    a newline-separated list of arguments, and each argument may</span><br><span class="line">    optionally have a tab character followed by the argument description.</span><br><span class="line">    Any description provided <span class="keyword">in</span> this way overrides a description given</span><br><span class="line">    with -d or --description.</span><br><span class="line"></span><br><span class="line">    The -w or --wraps options causes the specified <span class="built_in">command</span> to inherit</span><br><span class="line">    completions from another <span class="built_in">command</span>. The inheriting <span class="built_in">command</span> is said to</span><br><span class="line">    <span class="string">'wrap'</span> the inherited <span class="built_in">command</span>. The wrapping <span class="built_in">command</span> may have its own</span><br><span class="line">    completions <span class="keyword">in</span> addition to inherited ones. A <span class="built_in">command</span> may wrap</span><br><span class="line">    multiple commands, and wrapping is transitive: <span class="keyword">if</span> A wraps B, and B</span><br><span class="line">    wraps C, <span class="keyword">then</span> A automatically inherits all of C<span class="string">'s completions.</span></span><br><span class="line"><span class="string">    Wrapping can be removed using the -e or --erase options. Note that</span></span><br><span class="line"><span class="string">    wrapping only works for completions specified with -c or --command</span></span><br><span class="line"><span class="string">    and are ignored when specifying completions with -p or --path.</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    When erasing completions, it is possible to either erase all</span></span><br><span class="line"><span class="string">    completions for a specific command by specifying complete -c COMMAND</span></span><br><span class="line"><span class="string">    -e, or by specifying a specific completion option to delete by</span></span><br><span class="line"><span class="string">    specifying either a long, short or old style option.</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">Example</span></span><br><span class="line"><span class="string">    The short style option -o for the gcc command requires that a file</span></span><br><span class="line"><span class="string">    follows it. This can be done using writing:</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    complete -c gcc -s o -r</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    The short style option -d for the grep command requires that one of</span></span><br><span class="line"><span class="string">    the strings '</span><span class="built_in">read</span><span class="string">', '</span>skip<span class="string">' or '</span>recurse<span class="string">' is used. This can be</span></span><br><span class="line"><span class="string">    specified writing:</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    complete -c grep -s d -x -a '</span><span class="built_in">read</span> skip recurse<span class="string">'</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    The su command takes any username as an argument. Usernames are given</span></span><br><span class="line"><span class="string">    as the first colon-separated field in the file /etc/passwd. This can</span></span><br><span class="line"><span class="string">    be specified as:</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    complete -x -c su -d '</span>Username<span class="string">' -a '</span>(cat /etc/passwd | cut -d : -f 1)<span class="string">'</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    The rpm command has several different modes. If the -e or --erase</span></span><br><span class="line"><span class="string">    flag has been specified, rpm should delete one or more packages, in</span></span><br><span class="line"><span class="string">    which case several switches related to deleting packages are valid,</span></span><br><span class="line"><span class="string">    like the nodeps switch.</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    This can be written as:</span></span><br><span class="line"><span class="string"></span></span><br><span class="line"><span class="string">    complete -c rpm -n '</span>__fish_contains_opt -s e erase<span class="string">' -d nodeps '</span>Don<span class="string">'t check dependencies'</span></span><br><span class="line"></span><br><span class="line">    <span class="built_in">where</span> __fish_contains_opt is a <span class="keyword">function</span> that checks the <span class="built_in">command</span> line</span><br><span class="line">    buffer <span class="keyword">for</span> the presence of a specified <span class="built_in">set</span> of options.</span><br><span class="line"></span><br><span class="line">    To implement an <span class="built_in">alias</span>, use the -w or --wraps option:</span><br><span class="line"></span><br><span class="line">    complete -c hub -w git</span><br><span class="line"></span><br><span class="line">    Now hub inherits all of the completions from git. Note this can also</span><br><span class="line">    be specified <span class="keyword">in</span> a <span class="keyword">function</span> declaration.</span><br></pre></td></tr></table></figure>

      
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                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x"></i></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x"></i></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
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